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clock_test.go
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clock_test.go
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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"testing"
"time"
"github.com/benbjohnson/clock"
"github.com/stretchr/testify/assert"
"go.uber.org/atomic"
)
// controlledClock provides control over the time via a mock clock.
type controlledClock struct{ *clock.Mock }
func newControlledClock() *controlledClock {
return &controlledClock{clock.NewMock()}
}
func (c *controlledClock) NewTicker(d time.Duration) *time.Ticker {
return &time.Ticker{C: c.Ticker(d).C}
}
func TestControlledClock_NewTicker(t *testing.T) {
var n atomic.Int32
ctrlMock := newControlledClock()
done := make(chan struct{})
defer func() { <-done }() // wait for end
quit := make(chan struct{})
// Create a channel to increment every microsecond.
go func(ticker *time.Ticker) {
defer close(done)
for {
select {
case <-quit:
ticker.Stop()
return
case <-ticker.C:
n.Inc()
}
}
}(ctrlMock.NewTicker(time.Microsecond))
// Move clock forward.
ctrlMock.Add(2 * time.Microsecond)
assert.Equal(t, int32(2), n.Load())
close(quit)
}
func TestSystemClock_NewTicker(t *testing.T) {
want := 3
var n int
timer := DefaultClock.NewTicker(time.Millisecond)
for range timer.C {
n++
if n == want {
return
}
}
}